Draeger CH19501 Nickel Tetracarbonyl 0.1/a Detector Tubes (9 tests per box)

Application Range:

• Standard Measuring Range: 0.1 to 1 ppm Discoloration compared to color standard.
• Number of Strokes n: 20
• Time for Measurement: approx. 5 min
• Standard Deviation: ± 50 %
• Color Change: Yellow → Pink

Ambient Operating Conditions:

• Temperature: 0 to 30 °C
• Absolute Humidity: < 30 mg H2O / L

Reaction Principle:

• a) Ni(CO)4 + I2 → NiI2 + 4 CO
• b) NiI2 + Dimethylglyoxime → pink colored complex

Cross Sensitivity:

• Iron pentacarbonyl is also indicated by a brownish discoloration, however, with less sensitivity.
• Measurement of nickel tetra carbonyl is not possible in the presence of hydrogen sulfide of sulfur dioxide, since the reading is suppressed.
• Such a disturbance can be recognised by decoloration of the indicating layer even before the reagent ampoule is opened.

Additional Information:

• After performing the required 20 pump strokes the reagent ampoule must be broken and the liquid carefully drawn onto the indicating layer using the pump.